●This product is ordered by the lot. Purchase Unit: 30 pcs. Easy to operate just by pushing the pin to ensure complete installation; Just look at the pin and you can see the complete hitting performance; For architecture, electricity, hygiene, heating and cooling work, signs, chair mounting, machine installation work, etc.; Screw Nom: M12; Total Length: 3.1 inches (80 mm); Thread Length: 1.0 inches (25 mm); Tensile Maximum Load (16.7 mm). Embedded Depth: 0.16 inches (40.7 inch (18 mm); Tightening torque: N/m (box); Steel; Surface treatment: Trivalent chromate finish